<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>

<!-- Javascript is a programming language,
  this is only programming language which exists in hte browser
  --add interactions
  client -- very very high computing --browser
  application server -- thin layer of services
    database server -- mysql, oracle
    --security -->
 -->

<!-- two ways of adding javascript -->

<script type="text/javascript">
 // any code
 //inline javascript
 /**
  *
  *
  *
  */
</script>

<script type="text/javascript" src="app.js"></script>
<!--
<script type="text/javascript" src="app.js" /> this is wrong
-->



</body>
</html>